I bought my first Love Potion rose 6 years ago simply because I got intoxicted by its fragrance.
That plant was given to a friend when I had to relocate to NSW, where the quarantine law there prohibits plant materials to be brought in from WA.
I moved back to WA earlier this year, and I immediately went to the local rose nursery and bought myself two pots of Love Potion -- one plant was in the ungrafted form like the one I had 6 years ago, and the other was grafted onto a Fortuniana rootstock.
Both pots of plants were the same size when I bought them, but I noted that the grafted planted was bearing more blooms and grew mome quickly than the ungrafted plant, although both pots of plants are placed side by side on the patio (receiving the same amount of sunlight & rainfall).
There was hardly any Black Spot problem on the grafted plant at all, but the ungrafted plant showed some presence of very mild Black Spots.
And now that the Australian winter is coming to an end, and the pruned roses are putting out new shoots, I noted again that the grafted plant is doing much better than the ungrafted plant.
I would recommend Love Potion to those who like sweetly scented perfumed roses, and I rated its fragrance on a par with Double Delight (my other favourite fragrant rose) -- and if you get a grafted plant (it is worth the extra expense), you will have no problem growing Love Potion in pots.